Steel wire drawing forming mechanism

Abstract

The utility model relates to the technical field of steel wire drawing devices, in particular to a steel wire drawing forming mechanism, which is convenient for replacing a drawing die, ensures the finished product quality of drawn steel wires and can uniformly arrange the distances among the steel wires. Comprising a workbench, a plurality of supporting legs and a plurality of friction pads, the supporting legs are fixedly installed at the four corners of the bottom end of the workbench respectively, and the friction pads are fixedly installed at the bottom ends of the supporting legs; the device comprises a workbench and further comprises a feeding guide mechanism, a forming mechanism, a cooling and lubricating mechanism and a winding and drawing mechanism, the feeding guide mechanism is installed at the left end of the top of the workbench, the forming mechanism is installed at the top end of the workbench, the cooling and lubricating mechanism is installed at the bottom end of the workbench, and the output end of the cooling and lubricating mechanism is located in the forming mechanism. The winding and drawing mechanism is installed on the right portion of the top end of the workbench.

Description

Technical Field

[0001] The utility model relates to the technical field of steel wire drawing devices, in particular to a steel wire drawing and forming mechanism. Background Art

[0002] Steel wire is one of the four major types of steel, namely, plates, tubes, profiles and wires. It is a reprocessed product made by cold drawing hot-rolled wire rods. During its processing, it needs to be drawn and coiled. Prior art publication number CN208050597 proposes a drawing device for producing steel wire, comprising a drawing box, a steel wire inlet is arranged above the left side wall of the drawing box, steel wire is arranged at the steel wire inlet, a pump chamber is arranged on the left side of the drawing box, the left side wall and the bottom side wall of the pump chamber are integrated with the left side wall and the bottom side wall of the drawing box, an inlet wheel group is arranged on the right side of the pump chamber in the drawing box, a steel wire outlet is arranged above the right side wall of the drawing box, an outlet wheel group is arranged on the left side of the steel wire outlet in the drawing box, and a drawing die group is arranged between the inlet wheel group and the outlet wheel group on the bottom side wall of the drawing box. However, when drawing steel wires of different sizes or materials, the drawing dies need to be replaced in batches, which is very inconvenient to use. It is impossible to neatly arrange the spacing between the steel wires in the take-up reel according to the wire diameters of steel wires of different specifications, and the steel wires cannot be arranged tightly, affecting the use effect. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a steel wire drawing and forming mechanism which is convenient for replacing a drawing die, ensures the quality of the finished product of the drawn steel wire, and can evenly arrange the spacing between the steel wires.

[0004] The utility model discloses a steel wire drawing and forming mechanism, comprising a workbench, a plurality of legs and a plurality of friction pads, wherein the legs are fixedly installed at the four corners of the bottom end of the workbench respectively, and the friction pads are fixedly installed at the bottom ends of the legs; the utility model also comprises a feed guide mechanism, a forming mechanism, a cooling and lubricating mechanism and a winding and drawing mechanism, wherein the feed guide mechanism is installed at the top left end of the workbench, the forming mechanism is installed at the top end of the workbench, the cooling and lubricating mechanism is installed at the bottom end of the workbench, and the output end of the cooling and lubricating mechanism is located inside the forming mechanism, and the winding and drawing mechanism is installed at the top right part of the workbench; the steel wire to be drawn is input into the forming mechanism through the feed guide mechanism, the steel wire is pulled by the winding and drawing mechanism, and the forming mechanism processes and forms the steel wire, and the heat generated by the drawing is taken away by the cooling and lubricating mechanism during the steel wire drawing process, and the residue generated by the drawing is washed to ensure the quality of the finished product of the drawn steel wire, and the winding and drawing mechanism arranges and winds the steel wire at the same time.

[0005] Preferably, the feed guide mechanism includes a support frame, two groups of sliding rods, two groups of sliders, two groups of springs and two conveying rollers. The support frame is fixedly installed on the top left part of the workbench, and two push grooves are provided at the front and rear ends of the support frame. The sliding rod is fixedly installed in the push groove, and the slider is slidably installed on the outer wall of the sliding rod. A conveying roller is rotatably installed between the front and rear sliding rods, and the spring is sleeved on the outer wall of the sliding rod, one end of the spring is connected to the slider, and the other end of the spring is installed in the fixed groove, and the springs at the upper and lower ends are symmetrically arranged; the steel wire to be drawn is guided and conveyed between the two conveying rollers, and the slider is pushed by the spring to slide on the sliding rod, so that the conveying roller can convey steel wires of different diameters.

[0006] Preferably, the forming mechanism includes a forming box, multiple slides, multiple pulling hooks, multiple drawing dies, two sets of mounting frames, two sets of guide wheels and a limit assembly. The forming box is fixedly installed on the top of the workbench, and multiple mounting grooves are provided at the top of the workbench and at positions corresponding to the inside of the forming box. Inlet and outlet ports are provided at the left and right ends of the forming box, and mounting frames are symmetrically installed at the inlet and outlet ports. Guide wheels are rotatably installed on the mounting frames, and the drawing dies are installed on the top of the slide. Gradually decreasing drawing holes are provided on multiple drawing dies. The slide is slidably installed in the mounting groove, and a pulling hook is installed at the front end of the slide. The slide is pushed to install the matching drawing die inside the forming box, and the steel wire enters the forming box through the inlet and outlet ports, and is guided by the guide wheel to reduce friction. The steel wire is drawn and formed by the cooperation of multiple drawing dies, and the pulling hook is used to facilitate pulling the slide and take out the drawing die from the forming box, which is convenient to use.

[0007] Preferably, the limit assembly includes two telescopic cylinders, a movable plate and a plurality of limit seats, the two telescopic cylinders are respectively fixedly mounted on the top of the forming box, the telescopic end of the telescopic cylinder passes through the top of the forming box and a movable plate is fixedly mounted, the movable plate is slidably mounted inside the forming box, and a plurality of limit seats corresponding to the drawing die are fixedly mounted on the bottom end of the movable plate; after the drawing die is installed inside the forming box, the telescopic cylinder is started to push the movable plate to move downward, and the movable plate drives the limit seat to be pressed against the top of the drawing die to fix the drawing die, thereby ensuring stability during processing and improving processing quality.

[0008] Preferably, the cooling and lubricating mechanism comprises a liquid storage tank, a filter screen, a liquid suction pump, a liquid suction pipe, an output pipe, a shunt pipe, multiple groups of spray pipes and multiple spray heads. Multiple drainage grooves are provided at the top of the workbench and at positions corresponding to the inside of the molding box. The liquid storage tank is fixedly mounted at the bottom of the workbench and is connected to the drainage grooves. A filter screen is detachably mounted inside the liquid storage tank. The liquid suction pump is fixedly mounted on the rear side wall of the liquid storage tank. The input end of the liquid suction pump is connected to the inside of the liquid storage tank through the liquid suction pipe. The output end of the liquid suction pump is connected to the output pipe. The outlet end is connected with a shunt pipe, on which a plurality of ejection pipes are evenly arranged and installed, the ejection pipes and the drawing dies are alternately arranged, and ejection heads are installed on the ejection pipes, which are symmetrically arranged about the drawing holes. During drawing, the liquid extraction pump is started to extract the film agent through the liquid extraction pipe, which is input into the shunt pipe through the output pipe, and then input into the ejection head through the ejection pipe for ejection, so as to take away the heat generated by drawing and ensure the quality of the finished product of the drawn steel wire. The film agent falls back into the liquid storage tank through the drainage trough, and the residue generated by drawing is filtered and blocked by the filter net.

[0009] Preferably, the winding and pulling mechanism includes two vertical plates, a turntable, a threaded rod, a movable plug, a winding roller, a winding motor, a driving plug and an arrangement assembly. The two vertical plates are fixedly mounted on the top right end of the workbench. A turntable is rotatably mounted on the front vertical plate. A threaded rod is screwed on the middle of the turntable. A movable plug is fixedly mounted on the rear of the threaded rod. The winding motor is mounted on the side wall of the rear vertical plate. The output shaft of the winding motor passes through the vertical plate and is equipped with a driving plug. Fixed slots matching the movable plug and the winding roller are opened at the front and back of the winding roller. The winding roller is placed between the movable plug and the driving plug, and the threaded rod is rotated to make the movable plug and the driving plug enter the fixed slot to fix the winding roller. The steel wire is wound around the winding roller, and the winding motor is started to drive the winding roller to rotate, so as to wind and pull the steel wire.

[0010] Preferably, the arranging component includes a moving frame, a reciprocating screw rod, a driving pulley, a driving belt, a moving seat and a wire clamping guide wheel. The moving frame is installed on the top of the workbench, and a rotating groove is opened on the top of the moving frame. The reciprocating screw rod is rotatably installed in the rotating groove. The rear end of the reciprocating screw rod passes through the rotating groove and is equipped with a driving pulley. A driving wheel is arranged on the output shaft of the winding motor, and the driving pulley and the driving pulley are connected through a driving belt transmission. The bottom of the moving seat is screwed on the outer wall of the driving pulley, and two wire clamping guide wheels are rotatably installed on the upper part of the moving seat; the formed steel wire passes through the two wire clamping guide wheels, and when the winding motor rotates to drive the winding roller to wind up, the driving pulley is driven to rotate by the driving wheel and the driving belt, and the driving pulley drives the reciprocating screw rod to rotate, so that the moving seat moves back and forth on the moving frame to arrange the steel wires, so that the spacing between the steel wires in the winding roller is neatly arranged.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the steel wire to be drawn is input into the forming mechanism through the feed guide mechanism, the steel wire is pulled by the winding and drawing mechanism, and the forming mechanism processes and shapes the steel wire, and the heat generated by the drawing is taken away by the cooling and lubrication mechanism during the steel wire drawing process, and the residue generated by the drawing is washed away to ensure the quality of the finished product of the drawn steel wire, and the winding and drawing mechanism arranges and winds the steel wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a rear view structural schematic diagram of the utility model;

[0014] Figure 3 It is a front cross-sectional structural schematic diagram of the utility model;

[0015] Figure 4 It is a right side cross-sectional structural schematic diagram of the utility model;

[0016] Figure 5 It is a right view structural schematic diagram of the utility model;

[0017] Markings in the attached drawings: 1. workbench; 2. support legs; 3. friction pad; 4. support frame; 5. slide bar; 6. slider; 7. spring; 8. conveyor roller; 9. forming box; 10. slide seat; 11. pulling hook; 12. drawing die; 13. mounting frame; 14. guide wheel; 15. telescopic cylinder; 16. moving plate; 17. limit seat; 18. liquid storage tank; 19. filter screen; 20. liquid pump; 21. liquid pump pipe; 22. output pipe; 23. shunt pipe; 24. spray pipe; 25. spray head; 26. vertical plate; 27. turntable; 28. threaded rod; 29. ​​moving plug; 30. winding roller; 31. winding motor; 32. drive plug; 33. moving frame; 34. reciprocating screw rod; 35. driving pulley; 36. driving belt; 37. moving seat; 38. wire clamping guide wheel. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0019] Example 1

[0020] like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, legs 2 are fixedly installed at the four corners of the bottom end of the workbench 1, and a friction pad 3 is fixedly installed at the bottom end of the leg 2. A support frame 4 is fixedly installed on the left top end of the workbench 1. Two push grooves are provided at the front and rear ends of the support frame 4. The slide bar 5 is fixedly installed in the push groove. The slide block 6 is slidably installed on the outer wall of the slide bar 5. A conveying roller 8 is rotatably installed between the front and rear slide bars 5. A spring 7 is sleeved on the outer wall of the slide bar 5. One end of the spring 7 is connected to the slide block 6, and the other end of the spring 7 is installed in the fixed groove. The springs 7 at the upper and lower ends are symmetrically arranged. A molding box 9 is fixedly installed on the top end of the workbench 1. A plurality of installation grooves are provided at the top end of the workbench 1 and at positions corresponding to the inside of the molding box 9. Inlet and outlet ports are provided at the left and right ends of the molding box 9. A mounting frame 13 is symmetrically installed, a guide wheel 14 is rotatably installed on the mounting frame 13, a drawing die 12 is installed on the top of the slide 10, and a plurality of drawing dies 12 are provided with gradually decreasing drawing holes, the slide 10 is slidably installed in the mounting groove, a pulling hook 11 is installed at the front end of the slide 10, two vertical plates 26 are fixedly installed at the top right end of the workbench 1, a turntable 27 is rotatably installed on the front vertical plate 26, a threaded rod 28 is screwed in the middle of the turntable 27, a moving plug 29 is fixedly installed at the rear of the threaded rod 28, a winding motor 31 is installed on the side wall of the rear vertical plate 26, the output shaft of the winding motor 31 passes through the vertical plate 26 and is provided with a driving plug 32, and a fixed slot matching the moving plug 29 and the winding roller 30 is provided at the front and rear of the winding roller 30;

[0021] The steel wire to be drawn is guided and conveyed between two conveying rollers 8. The slider 6 is pushed by the spring 7 to slide on the slide bar 5, so that the conveying roller 8 can convey steel wires of different diameters. The slide seat 10 is pushed to install the matching drawing die 12 inside the forming box 9. The steel wire enters the forming box 9 through the inlet and outlet, and is guided by the guide wheel 14 to reduce friction. The steel wire is drawn and formed by the cooperation of multiple drawing dies 12. The slide seat 10 is pulled conveniently by the pulling hook 11, and the drawing die 12 is taken out of the forming box 9. It is convenient to use. The winding roller 30 is placed between the moving plug 29 and the driving plug 32, and the threaded rod 28 is rotated to make the moving plug 29 and the driving plug 32 enter the fixed groove, and the winding roller 30 is fixed. The steel wire is wound around the winding roller 30, and the winding motor 31 is started to drive the winding roller 30 to rotate, and the steel wire is wound and drawn.

[0022] Example 2

[0023] like Figures 1 to 4As shown, on the basis of the first embodiment, it also includes two telescopic cylinders 15 respectively fixedly installed on the top of the forming box 9, the telescopic end of the telescopic cylinder 15 passes through the top of the forming box 9 and is fixedly installed with a movable plate 16, the movable plate 16 is slidably installed inside the forming box 9, and the bottom end of the movable plate 16 is fixedly installed with a plurality of limit seats 17 corresponding to the drawing die 12, a plurality of drainage grooves are provided at the top of the workbench 1 and at positions corresponding to the inside of the forming box 9, a liquid storage tank 18 is fixedly installed at the bottom of the workbench 1 and is connected to the drainage grooves, a filter screen 19 is detachably installed inside the liquid storage tank 18, a liquid pump 20 is fixedly installed on the rear side wall of the liquid storage tank 18, an input end of the liquid pump 20 is connected to the inside of the liquid storage tank 18 through a liquid suction pipe 21, and an output end of the liquid pump 20 is connected to There is an output pipe 22, the output end of the output pipe 22 is connected to a shunt pipe 23, a plurality of ejection pipes 24 are evenly arranged and installed on the shunt pipe 23, the ejection pipes 24 are alternately arranged with the drawing die 12, an ejection head 25 is installed on the ejection pipe 24, and the ejection head 25 is symmetrically arranged about the drawing hole, a moving frame 33 is installed on the top of the workbench 1, a rotating groove is opened on the top of the moving frame 33, a reciprocating screw rod 34 is rotatably installed in the rotating groove, a driving pulley 35 is installed at the rear end of the reciprocating screw rod 34 through the rotating groove, a driving wheel is arranged on the output shaft of the winding motor 31, and the driving pulley 35 and the driving wheel are connected by a driving belt 36, the bottom of the moving seat 37 is screwed on the outer wall of the driving pulley 35, and two clamping guide wheels 38 are rotatably installed on the upper part of the moving seat 37;

[0024] After the drawing die 12 is installed inside the forming box 9, the telescopic cylinder 15 is started to push the movable plate 16 to move downward, and the movable plate 16 drives the limit seat 17 to press against the top of the drawing die 12 to fix the drawing die 12, thereby ensuring the stability during processing and improving the processing quality. During drawing, the liquid pump 20 is started to extract the film agent through the liquid extraction pipe 21, and the film agent is input into the shunt pipe 23 through the output pipe 22, and then input into the ejection head 25 through the ejection pipe 24 to eject the film agent, thereby taking away the heat generated by the drawing and ensuring the drawing of the steel wire. In order to improve the quality of the finished product, the film agent falls back into the liquid storage tank 18 through the drainage trough, and the residues produced by drawing are filtered and blocked by the filter screen 19. The formed steel wire passes through the two wire clamping guide wheels 38. When the winding motor 31 rotates to drive the winding roller 30 to rewind, the driving wheel and the driving belt 36 drive the driving pulley 35 to rotate, and the driving pulley 35 drives the reciprocating screw rod 34 to rotate, so that the moving seat 37 moves back and forth on the moving frame 33, and the steel wires are arranged, so that the spacing between the steel wires in the winding roller 30 is neatly arranged.

[0025] like Figures 1 to 5As shown, a wire drawing and forming mechanism of the utility model, when working, the wire to be drawn is guided and conveyed between two conveying rollers 8, and the slide seat 10 is pushed to install the matching drawing die 12 inside the forming box 9, and the wire enters the forming box 9 through the inlet and outlet, and is guided by the guide wheel 14. The wire is drawn and formed by the cooperation of multiple drawing dies 12. When drawing, the liquid pump 20 is started to extract the film agent through the liquid extraction pipe 21, and the film agent is input into the shunt pipe 23 through the output pipe 22, and then input into the ejection head 25 through the ejection pipe 24 for ejection, so as to take away the heat generated by drawing, and form the film agent. The shaped steel wire passes through two wire clamping guide wheels 38, and the winding roller 30 is placed between the movable plug 29 and the driving plug 32. The threaded rod 28 is rotated to make the movable plug 29 and the driving plug 32 enter the fixed groove, and the winding roller 30 is fixed. The steel wire is wound around the winding roller 30, and the winding motor 31 is started to drive the winding roller 30 to rotate. When the winding motor 31 rotates to drive the winding roller 30 to rewind, the driving pulley 35 is driven to rotate through the driving wheel and the driving belt 36, and the driving pulley 35 drives the reciprocating screw rod 34 to rotate, so that the movable seat 37 reciprocates on the movable frame 33 to arrange the steel wire.

[0026] The liquid pump 20 and the winding motor 31 of the wire drawing and forming mechanism of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for creative labor by technicians in this field.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A wire drawing and forming mechanism, comprising a workbench (1), a plurality of legs (2) and a plurality of friction pads (3), wherein the legs (2) are fixedly mounted at the four corners of the bottom end of the workbench (1), and the friction pads (3) are fixedly mounted at the bottom ends of the legs (2); characterized in that: It also comprises a feed guide mechanism, a forming mechanism, a cooling and lubricating mechanism and a winding and drawing mechanism, wherein the feed guide mechanism is mounted at the top left end of the workbench (1), the forming mechanism is mounted at the top end of the workbench (1), the cooling and lubricating mechanism is mounted at the bottom end of the workbench (1), and the output end of the cooling and lubricating mechanism is located inside the forming mechanism, and the winding and drawing mechanism is mounted at the top right part of the workbench (1).

2. A steel wire drawing and forming mechanism as claimed in claim 1, characterized in that: The feed guide mechanism comprises a support frame (4), two groups of slide bars (5), two groups of sliders (6), two groups of springs (7) and two conveying rollers (8). The support frame (4) is fixedly mounted on the left top of the workbench (1). Two push grooves are provided at the front and rear ends of the support frame (4). The slide bars (5) are fixedly mounted in the push grooves. The sliders (6) are slidably mounted on the outer walls of the slide bars (5). A conveying roller (8) is rotatably mounted between the front and rear slide bars (5). The spring (7) is sleeved on the outer wall of the slide bar (5). One end of the spring (7) is connected to the slider (6). The other end of the spring (7) is mounted in the fixed groove. The springs (7) at the upper and lower ends are symmetrically arranged.

3. A steel wire drawing and forming mechanism as claimed in claim 1, characterized in that: The molding mechanism comprises a molding box (9), a plurality of slides (10), a plurality of pulling hooks (11), a plurality of drawing dies (12), two groups of mounting frames (13), two groups of guide wheels (14) and a limit assembly. The molding box (9) is fixedly mounted on the top of a workbench (1). A plurality of mounting grooves are provided at the top of the workbench (1) and at positions corresponding to the inside of the molding box (9). Inlet and outlet ports are provided at the left and right ends of the molding box (9). Mounting frames (13) are symmetrically mounted at the inlet and outlet ports. Guide wheels (14) are rotatably mounted on the mounting frames (13). The drawing dies (12) are mounted on the top of the slide (10). A plurality of drawing dies (12) are provided with gradually decreasing drawing holes. The slide (10) is slidably mounted in the mounting groove. A pulling hook (11) is mounted at the front end of the slide (10).

4. A steel wire drawing and forming mechanism as claimed in claim 3, characterized in that: The limiting assembly comprises two telescopic cylinders (15), a movable plate (16) and a plurality of limiting seats (17). The two telescopic cylinders (15) are respectively fixedly mounted on the top of a molding box (9). The telescopic ends of the telescopic cylinders (15) pass through the top of the molding box (9) and are fixedly mounted with a movable plate (16). The movable plate (16) is slidably mounted inside the molding box (9). A plurality of limiting seats (17) corresponding to the drawing die (12) are fixedly mounted on the bottom end of the movable plate (16).

5. A steel wire drawing and forming mechanism as claimed in claim 3, characterized in that: The cooling and lubricating mechanism comprises a liquid storage tank (18), a filter screen (19), a liquid pump (20), a liquid pumping pipe (21), an output pipe (22), a flow divider (23), a plurality of groups of spray pipes (24) and a plurality of spray heads (25). A plurality of liquid drainage grooves are provided at the top of the workbench (1) and at positions corresponding to the inside of the molding box (9). The liquid storage tank (18) is fixedly installed at the bottom of the workbench (1) and is connected to the liquid drainage grooves. A filter screen (19) is detachably installed inside the liquid storage tank (18). The liquid pump (20) is fixedly installed On the rear side wall of the liquid storage tank (18), the input end of the liquid pump (20) is connected to the interior of the liquid storage tank (18) through a liquid pumping pipe (21), the output end of the liquid pump (20) is connected to an output pipe (22), the output end of the output pipe (22) is connected to a shunt pipe (23), a plurality of ejection pipes (24) are evenly arranged and installed on the shunt pipe (23), the ejection pipes (24) and the drawing die (12) are alternately arranged, and an ejection head (25) is installed on the ejection pipe (24), and the ejection head (25) is symmetrically arranged about the drawing hole.

6. A steel wire drawing and forming mechanism as claimed in claim 1, characterized in that: The winding and pulling mechanism comprises two vertical plates (26), a rotating disk (27), a threaded rod (28), a movable plug (29), a winding roller (30), a winding motor (31), a driving plug (32) and an arrangement component. The two vertical plates (26) are fixedly mounted on the top right end of the workbench (1). The rotating disk (27) is rotatably mounted on the front vertical plate (26). The middle part of the rotating disk (27) is screwed with a threaded rod (28). The rear part of the threaded rod (28) is fixedly mounted with a movable plug (29). The winding motor (31) is mounted on the side wall of the rear vertical plate (26). The output shaft of the winding motor (31) passes through the vertical plate (26) and is mounted with a driving plug (32). The front and rear sides of the winding roller (30) are provided with fixed slots matching the movable plug (29) and the winding roller (30).

7. A steel wire drawing and forming mechanism as claimed in claim 6, characterized in that: The arrangement assembly comprises a moving frame (33), a reciprocating screw rod (34), a driving pulley (35), a driving belt (36), a moving seat (37) and a clamping wire guide wheel (38). The moving frame (33) is mounted on the top of a workbench (1). A rotating groove is provided on the top of the moving frame (33). The reciprocating screw rod (34) is rotatably mounted in the rotating groove. The rear end of the reciprocating screw rod (34) passes through the rotating groove and is equipped with a driving pulley (35). A driving wheel is arranged on the output shaft of the winding motor (31). The driving pulley (35) and the driving wheel are connected to each other through a driving belt (36). The bottom of the moving seat (37) is screwed on the outer wall of the driving pulley (35). Two clamping wire guide wheels (38) are rotatably mounted on the upper part of the moving seat (37).

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